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Finding the Fourth Proportional to 28,229.52, 42,349.94 and 9,508.80

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Solution

The fourth proportional to 28,229.52, 42,349.94 and 9,508.80 is: 14,265.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,229.52 : 42,349.94 = 9,508.80 : x
  2. Step 2: Convert to fraction form
    28,229.52/42,349.94 = 9,508.80/x
  3. Step 3: Cross multiply
    28,229.52x = 42,349.94 × 9,508.80
  4. Step 4: Simplify right side
    28,229.52x = 402,697,109.47
  5. Step 5: Solve for x
    x = 402,697,109.47/28,229.52
  6. Step 6: Final answer
    x = 14,265.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.